BRYOZOA OF THE PHILIPPINE REGION 523 



ACTINOPORA PHII.IPPINENSLS, new species 



Plate 77, fig. 5 



Description. — The zoarium encrusts shells; it is discoidal and sur- 

 rounded by a wide basal lamella. The radiating fascicles are numer- 

 ous, crowded, salient, and as wide as the interfascicular spaces. 



Measurements. — Width of fascicles, 0.15 mm.; zoarial diameter, 

 4.5; and number of fascicles, 48. 



Affinities. — This species has the aspect of Actinopora gaudryana 

 D'Orbigny, 1852, of the European Cretaceous, but it differs in its 

 large peripheral basal lamella and in its very irregular center. 



Up to the present the ovicelled species of Actinopora have been 

 classed in the genus Desmeplagioecia Canu and Bassler, 1920. It 

 may be therefore that the present species also belongs to this genus, 

 but we have not yet discovered the ovicell. 

 Occurrence. — 



D. 5137. Jolo Light, Jolo; 6° 4' 25" N.J 120° 58' 30" E.; 20 



fathoms; S. Sh. 

 D. 5151. Sirun Island, Sulu Archipelago; 5° 24' 40" N.j 120° 

 27' 15" E.; 24 fathoms; co. S., Sh. 

 Holotype.—C&t. No. 8336, U.S.N.M. 



Family FRONDIPORIDAE Busk, 1875 



Genus FILIFASCIGERA D'Orbigny, 1852 



The colonies are creeping, narrow, linear, or curved. The tubes 

 are grouped in salient, orbicular, or elliptical fascicles, regularly 

 spaced. The orifices are polygonal. The ovicell is a vesicle placed 

 between the fascicles and perforated by closed tubes. 



Genotype. — Filifascigera dichotoma D'Orbigny, 1852. Cretaceous — 

 Recent. 



The known species of the genus are: 



Filigascigera robusia Canu and Bassler, 1927 Hawaii (142-406 m.). 



Filifascigera parvipora, new species Philippines (34 m.). 



Filifascigera pluripora, new species Philippines (192 m.). 



Filifascigera miocenica Canu MSS Miocene (Helvetian). 



Filifascigera bulbosa Levinscn, 1925 Cretaceous (Danian). 



Filifascigera (Tubulipora) megaera Lonsdale, 1845 Cretaceous (Vincentown.) 



Filifascigera dichotoma D'Orbigny, 1852 Cretaceous (Scnonian). 



This genus until recently was known as fossil only in the Cretaceous. 

 We have had the good fortune to discover a species in the Helvetian 

 of Touraine and three recent species in the equatorial zone. The 

 living species have varying depths, but water from 17° to 20° is 

 absolutely necessary. The ovicell is that of the Frondiporidae, which 

 permits the exact classification. We have given a special study of 

 this genus in our work on the Bryozoa of Hawaii. 



